In order to prevent my master password from being stolen (when using an untrusted public computer - potentially have keyloggers), I need to use virtual keyboard to unlock Sticky Password, but it's hard to make it because of complex master passwords.

Hi, developing One Time Password feature is not an overnight happening nor it is something we can deliver in regular updates. This needs to be discussed very carefully from many sides - product architecture, design, workflow, security etc. So as we said before, we thank you for the insight a lot, we will be talking about this feature, but first we need to find out if our users really want this and if so, how it should work exactly and how we will be able to implement it. There are many features in the queue which needs to be done and we can not simply add everything what we see in forum, customer feedbacks and so on. We would love to, but we have to work with our resources and time availability given. Hope this clears things out a little bit.